(Troutdale, OR) -- An investigation is ongoing after someone spray-painted a racist message on the side of a school in Troutdale. The graffiti was discovered over the weekend at Sweetbriar Elementary School. Neighbors waking up Sunday morning gathered to cover up the graffiti with some grey paint. Police say it's unclear if the case is connected to a similar case in March, when anti-Muslim graffiti was written on the walls of a Troutdale home.